Rail Line Speed

[TrainViation]

What are the main (and minor) factors which determine a rail lines maximum speed, such as curve?

 

[Bald Rick]

What are the main (and minor) factors which determine a rail lines maximum speed, such as curve?

There’s about 100 factors. Horizontal curvature is one of them.

 

[Senex]

There’s about 100 factors. Horizontal curvature is one of them.

Are there any cases in this country where the vertical curvature is responsible for a limit? I seem to remember that it is responsible in a couple of cases on the original French LGV.

 

[Bald Rick]

Are there any cases in this country where the vertical curvature is responsible for a limit? I seem to remember that it is responsible in a couple of cases on the original French LGV.

Yes, quite a few. For example between Tipton and Coseley.

 

[brad465]

There’s about 100 factors. Horizontal curvature is one of them.

Have you ever considered creating a lecture video where you detail all these factors and explain the fundamentals? If you did you could just provide the link in future to anyone who asks on this subject, and if you monetise the video you can retire early

 

[swt_passenger]

What are the main (and minor) factors which determine a rail lines maximum speed, such as curve?

There was a fairly detailed discussion last year that seemed to concentrate on the effects of curves:

How are speed limits set?

Just interested in how speed limits were set.

www.railforums.co.uk

 

[southern442]

Have you ever considered creating a lecture video where you detail all these factors and explain the fundamentals? If you did you could just provide the link in future to anyone who asks on this subject, and if you monetise the video you can retire early

I unironically would listen to that for hours I think - the idea of looking over all the case studies would be fascinating...

 

[zephyr6]

There’s about 100 factors. Horizontal curvature is one of them.

 

[Bald Rick]

Have you ever considered creating a lecture video where you detail all these factors and explain the fundamentals? If you did you could just provide the link in future to anyone who asks on this subject, and if you monetise the video you can retire early

I kind of did once, in a meeting to a group of local authorities and businesses, to try and explain why making trains run more quickly wasn‘t straightforward. It did not go down well!